#include <string.h>
#include <stdio.h>

int main ()
{
	int count = 0;
	printf("EOF=== %d \n", EOF);		// output : -1
	while(1) {
		int ch = getchar();
		printf("a=== %c \n", ch);	
		count ++ ;
		if(count == 10){
			break;
		}
	}
}